In order to improve the oil and gas development recovery rate,surfactants are usually used.However,due to the inability of a single surfactant to achieve ultra-low interfacial tension (IFT) and strong hydrophilic conditions,the oil and gas recovery rate of traditional surfactant flooding is affected.To address these issues,improving oil recovery through surfactant mixtures is a feasible solution.In this paper,the potential of new composite surfactants as a means to improve oil recovery was investigated.The results showed that compared to individual surfactant solutions,composite surfactants had a more significant impact on changes in oil-water interfacial tension and wettability.The use of composite surfactant systems could achieve ultra-low surface tension (about 0.006 mN·m-1),therefore the research suggested that this new type of composite surfactant was effective and could be used for oilfield development.
Composite surfactantOil and gas development recovery rateGlycerolRhammnolipidsOil water interfacial tensionWettability
维普
万方数据
